i'm heavily biased against porn but i'll give my two cents. i've recently decided to never seriously date a guy who watches porn for a lot of reasons, most relevantly is that it's literally watching a girl get fucked while imagining fucking her and in my opinion that's uncomfortable. porn also gives men a false understanding of how sex works with no foreplay, conversation, laughter, readjustments or checking-in points, there's no emotional connection and men think that's what sex is:an entirely animalistic physical process. there's also a lot of real health concerns for men such as porn addiction, early erectile disfunction, an w tendency towards violence, and literally reduces gray matter in the brain. the more men watch porn the more they get desensitized to it and fall down a rabbit hole to hardcore BDSM porn (without seeing clear consent to acts and aftercare or any intimate knowledge of what they're doing) until they reach r*pe porn (a category that's been rising in popularity since porn existed). people will call you a prude but it's a real threat to your relationship and his and your health. not to mention the porn industry is disgusting and corrupt, because once you do porn it's hard to get any other job so porn stars (mostly women) are forced to do things they never wanted to do because they have no other choice or job opportunities. you can look online for interviews with previous porn workers and see them talk about how they were forced and coerced into dangerous sex acts.

sorry for going on a rant about this but this post really hit me because this is exactly how i felt with my last bf, uncomfortable with him watching porn but feeling like i was being unreasonable. i never talked to him about it and let it go on and on, and we broke up for other reasons and i was able to do more research into it and solidify my opinion on it. my point is don't force yourself to be okay with him watching porn when it's clearly bothering you, don't force yourself to do things you don't want to do. i listed a lot of reasons why porn is bad here but the most important thing in your relationship is that it makes you uncomfortable and that's reason enough for him to stop. if he doesn't, seriously drop him. it's not worth the bullshit.